Rotary gas-engine.



-' PATBNTED JULY 14, 1908.

W. o. G'OVEY.

ROTARY GAS ENGINE'.

APPLICATION FILED DIK-10.21.1906.

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No. 893,056. PATENTED JULY 14, 1908.

W. 0. COVBY.

ROTARY GAS-ENGINE.

APPLICATION FILED 13110.21-, 1906.

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, y 40 v 20 J6, 42 J9 A Hofe/V516 UNrrED STATES PATENT oFFicEy elimina' o'. cover, or'MARiETTA, OHIO, AssIGNoR eF-FIFrY-ONE oNn-HUNDRED'rHs To SAMUEL FREEDMAN, oF MARIETTA, o111o.

ROTARY GAS4ENG1NE.

'Specification of Letters Patent.

Patented July 14, 1908.

Application mea December 21, 190e. sen-ax No. 348.955.

To all whom it may concern.' Be it known that I, WARREN O. COVEY', a citizen of tbc United States, residing at Marietta, in the county of Washington and State 5 vof ()hio, havc'invented a' new anduseful Rotary Gas-llnginc, of which the following is a spccilication.

'lhis` invention relates torotary internal combustion engines, and has for its principal object to provide an engine of very simple construction `in which a seriespf cylinders are connected toa single crank and are mounted for bodily rotative movement around the crank axle, or shaft.

A further object of the invention is'to provide a rotary engine of simple construction in which a plurality of cylinders are connected to a single supply through thelmedium of the supports by which the cylinders are carried,`

and to secure an even distribution ofpower and utilize the force exerted in a portion of the cylinders on the working stroke for com- {ressing the charges in the remaining cylini ers.

A still lurtherobje'ct ofthe invention is to.

provide an engine having a fixed crankshaft and a plurality of cylinders, .th'e latter being arranged to revolve around the crank shaft while the pistons of the cylinders are connectod to the crank, so that as the pistons reciprocate, the cylinders will be .compelled to revolve.' 2

, With these and other objects in view, as will more fully'herinafter appear, the inven- :15 'tion consists in certain novel features ofconstruction and arrangement if parts, hereinafter fully described, illustrated in the accom pany-ing drawings, and particularly pointed out in the appended claim, it being un.-

10' d'erstood that various changes in the form, proportions, size and minor details of the structure may be made Without departing from the spirit or sacrificing any of the advanta es of the invention.

In t e accompanying drawings z-Figure 1 is an elevation, partly in section, of a rotary internal combustion engine constructed in accordance with the invention. Fig. 2 is a transverse sectional view of the same on the EIC line 2-2 ofig. 1. Fig.- 3 is an enlarged section of a portion' of the engine and `cylinder hub. Fig. 4 is a sectional view on an enlarged scale of a portion of one of the cylinff ders. 5E Similar numerals of reference Vare em- 'inr durin lployed to indicate corresponding parts throughout the several figures of the drawings.

The `frame of the engine includes a pair of standards 10, to the upper portions'of which is secured a fixed shaft'l 1'1 carrying a iixed crank pin 12, vthe shaft and crank pin being rigidly held from movement.

` Mounted on the shaft are two hubs 15 and 16, the former heilig solid, and the latter being hollow, and serving as an admission chamber l'or the explosive charge. The. hub 16 is extended to partly embrace a iixedcasing-18 having a cylindrical periphery, over which iits a stu'lling box 19, morder to prevent tlre escape of any of the gases or other luids,and this casing is placed in communication with a suitable source of supply, by

means of a pipe 20.

Extending radially from the two hubs are arms 22 and 23, the arms 22 being preferably solid, while the arms 23 are hollow and form passages through which the charges pass to the several c.yl1nders.` 4 y The outer ends ol the arms are provided l'with journal boxes for the reception of trun-` nions 25and 26 that project from the cyllnders 27, said trunnions `being diametrically opposed, and the trunnion 26 being hollow andl placed in communication with the passa e of arm 23 by means of a port 27.

n" each of the hollow trunnions 26 is a ported partition 30 having a seat for a one- Way checkvalve 31y which is normally retained in closed position by a suitable spring 32, the `'valve opening to permit the passage of the explosiye charge to the cylinder and closthe compression oit sufch charge.

zach o the cylinders is provided with ya piston 35 from which extendsaa `rod 36, and

vall 'of these rods are connected to a circular cross head 37, as will be seen on reference to Fig. 1. The rod 36 of one 'of the pistons is rigidly connected to the cross head, in order that rotative movement of. the latter may lie-insured, while the remaining rods are con nected to the cross head bv pivot pins 39 to permit the necessary freedom of movement of the cylinders while` the engine is in operation.

Thehollow trunnion of each cylinder leads to a passage 40 from which assage lead two n ports 41 and 42, to the cyinder, and at a point opposite the port 42 1s an exhaust port .43 through which the products of combussoy Y, radiating ribs 45, and as the engine rotates,

the heat will be radiated to an extent sulltion mayescape at the end of each Working Y stroke.

. through the port 41, the valve 31 being open on this stroke, while the charge which previously entered the *cylinder through the port 42 is compressed. lOn the following working stroke, the charge-in the crank shaft end of the cylinder is compressed, and valve 31 is closed, and by the time the piston reaches the end of the working stroke, the charge which has been compressed in the crank shaft end of the cylinder will flow through the passage 4() and port 42 into the explosion chamber.

The explosion chamber ends of the several cylinders are preferably provided with heat cient to keep the cylinders from overheating. I claim .The combination with a frame,of a crank shaft rigidly secured thereto and having a crank pin, a pair oi hubs mounted on the4 shaft at op osite sides of the crank pin and free to revo Ve on said shaft, one of said hubs being hollow, and the other solid, radially disposed arms extending from the hubs and provided at their outer ends with bearings, the arms of the hollow hub having `passages for the explosive charges and communicating with said hollow hub, means for sup lying the explosive charge to the hollow hu cylinders, a pair of trunnions extending from each cylinder and mounted in bearings at the outer ends of the arms, one of said trunnions being hollow and having ported communication with the hollow arm, a check valve arranged in vthe hollow trunnion, a piston disposed in eachY of the cylinders, a revoluble cross head 'Qnthe crank pin, a piston rod rigidly connected to the cross head Aand to one of the pistons, and additional piston rods rigidly connected to the remaining pistons and pivotally connected tothe cross head, substantially as speciiied.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature i in the presence of two witnesses.

WARREN O. COV EY.

Witnesses:

N. E. KIDD, RUTH SMITH. 

